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(No Model.) 2 Sheets-'Sheet 1' W. KOCH & W. WIESE.

, Sewing Machine. No. 234,587. Patented Nov. 16,1880.

ILPETEHS. PHOTO-LITHOGRAFHER, WASHINGTON. a G.

2 Sheets- -Sheet 2.

(No Model.)

W, KOCH 8; W. WIESE.

Sewing Machine.

No. 234,587.- Patented Nov, 16, I880.

jnren Z0719: Zkfl 'mu/r v iioriafy- N.FETERS, FHOTO-LITHOGRAPHEIL WASHINGTON. D C,

lJNrrnn rnrns ATENT FFICE,

WVILLIAM KOCH AND WVILLIAM WVIESE, OF NEW YORK, N. Y.

SEWING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 234,587, dated November 16, 1880.

Application filed March 30, 1880.

To all whom t't may concern:

Be it known that we, WILLIAM Keen and WILLIAM Wrnsn, of the city, county, and State of New York, have invented a new and Improved Sewing-Machine and we do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, making part of this specification.

This invention is in the nature of an improvement in sewing-machines.

The invention consists in a sewing-machine with a gang of needles, provided with two feeding devices revolving in the same plane and independently of each other, in combination with ratchets and pawls whereby the feed is operated, and also a horizontally-adjustable carriage carrying needles, in combination with a cam, cam-rod, and worm and worm-wheel, constructed and arranged in the manner hereinafter more particularly described.

In the accompanying sheets of drawings, Figure 1 represents a plan view of our sewingmachine; Fig.2, an end view of same; Fig. 3, a front elevation, partly in section; Fig. 4, an end view, in section, through lines 00 00, Figs. 1 and 3 Fig. 5, plan showing stitches produced.

Similar letters of reference indicate like parts in the several figures.

This invention relates more particularly to that class of sewing-machines constructed with two or more needles and designed to automatically form a series of angles or quilting, the stitching, or rather the angles formed by the stitching, increasing in size from one end to the other of the fabric that is sewed, to correspond with the conical form of the garment for which the fabric is designed. To accomplish this the frame A of our machine, with the needles to carried thereby, is constructed to have a reciprocating motion on the base B. To the base of this frame A is secured, by a yielding joint, a cam-rod, G, at one of its ends. The other end of this cam-rod is provided with a slot, 1), through which passes a shaft, D, and into this cam-rod are firmly fixed two pins, 0 d. On the shaft D is fixed a worm-wheel, F, meshing with a worm, W, on a shaft, G, and also onto the shaft D is fixed a cam, E, the cam E being placed between the two pins 0 d. Resting in (No model.)

suitable journals is the above-mentioned driving-shaft G, with an eccentric or cam, H, fixed to it; and telescopically fitted to this shaft G, and secured to it atone end by slot 0 and key (1, is a shaft, l, passing through the frame A,

i with a cam, J, and crank K fixed at or-near its other end.

Supported in suitable bearings formed in brackets e, and extending within the frame A, are two feed-rollers, L and M. These feedrollers are constructed to revolve independently of each other, their inner ends being disconnected save by a shaft, f, to support the inner ends, but around which they may revolve independently. To the outer ends of each of these feed-rolls are fixed ratchet-wheels N and 0. Below each of the feed-rollers L and M are pressurerollers P. The ends of the shaft Q, supporting these rollers, are journaled in levers h and t, which lovers have coiled springs and Z at their outer ends.

Secured at or near the outer ends of the feedrollers, or, more properly, the parts of them which project beyond their bearings in the brackets e, are levers R, with pawls s secured to their inner ends, so as to engage in the teeth of the wheels N and O, and with' coiled springs t at their outer ends.

Journaled in the top of the frame A is a shaft, S, rocked by a crank, m, fixed at one of its ends, and a connecting-rod, at, extending from this crank to the crank K on the shaft 1. The shaft S has arms on extending forward and supporting or jointedly connected with the needles a, so that as said shaft S is rocked the needles will receive the usual vertically-reciprocating motion. Also pivoted to the brackets c are levers T, with projections 0, which projections are in contact with the under sides of the levers B. These levers T, at or near their outer ends, have pins p, which pass through them and enter into recesses 1" formed in the front legs of the brackets 6. These pins 19 are kept in place by springs a fixed to the levers T. To the front sides of the brackets cis fixed a sewing-plate, V.

Now, our sewing-machine being constructed substantially as above described, it is operated as follows: Power being applied in any desirable way to the shaft G, this shaft is caused to revolve in its bearings, and in so doing the worm W is likewise revolved, causing the wormwheel F to turn, and as this last-named wheel turns motion is imparted to the shaft D, eausing the cam E to turn, and as this cam revolves it is brought in contact with the pins 0 and (1, so that when the greatest eccentricity of this cam is brought in contact with one of the pins, as c, the cam-rod O thrusts the frame A from right to left, and when, in the course of its revolution,the cam E is brought in contact with the pin (1 the cam-rod 0 draws the frame A from left to right, producing a reciprocatin g motion of the frame A as the cam revolves. As the shaft Gr continues to revolve, besides imparting this reciprocating motion to the frame A in the manner just described, it also causes the cam H on that shaft to turn, and the cam J on the shaft I to turn with it, and as these cams turn they are brought in contact with the levers R, raising them so that the pawls s on these levers, engaging in the ratchets of the ratchet-wheels N and 0, cause these wheels to turn, and in turning revolve the feed-rollers L and M, and as the shaft Gr revolves the shaft I causes the crank K to turn, and through the connecting-rod n impart a rocking motion to the shaft S, whereby the needles (6 are operated.

Now, since the feed-rolls L and M are, as be fore stated, substantially disconnected from each other, and since each of these rolls is operated by an independent cam and ratchet and pawl, it will be seen that they revolve independently of one another, and therefore that one feed-roll may revolve at a different speed than does the other, or at the same speed, if desired. This variation in the speed of these rolls is accomplished by the levers T, which levers, when pressed downward, cause the projections 0 at their inner ends to be forced against the under side of the levers B, so that a less surface of the cams H and J is brought against these levers It, and they are therefore the less actuated by them, and the pawls s are thrust against a less number of teeth in the ratchet-wheels N and O, causing these wheels and the feed rolls to turn with greater or less number of revolutions as the levers T are raised and depressed in the manner just described. The less the levers R are raised the more they and their pawls are actuated by the cams H and J, and vice versa. Hence it is clear that through the adjustment of the levers T either one of the feed-rolls L or M may at pleasure be made to revolve at a speed somewhat in excess of the other. As the cams H and J revolve out of contact from the levers R these levers are restored to their normal position by the action of the spiral springs t.

The machine being in operation in this manner, the fabric to be sewed is fed to the needles over the cloth-plate V, and as the needles perforate the fabric the frame A, with the nee dles reciprocating in the manner described, and the feed-rolls L and M revolving and carryin g the cloth beneath theneedles at the same time, causes each of the needles to make a zigzag line of stitches. Now, if each of the feedrolls L and M revolve at precisely the same speed, the fabric will be fed to the needles in a straight course and with uniform speed beneath all of them, and the zigzags formed by each needle will be of the same size; but if it is intended that the angles of the stitches of each needle, or the sides of the zigzags which it makes, shall be greater at one part of the fabric than the other-for instance, at the base of a conical piece of goodsthen it is desirable that the speed of one of the feed-rolls, L or M, by the adjustment of the levers T, as before described, shall exceed that of the other feed-roll, which will at once change the course of the fabric beneath the needles from a straight course to an angular course, since one side of the fabric will be fed faster than its other side, and as one part of the surface of the fabric is in this way fed beneath theneedles at a greater speed than the other part of its surface it is plain that the stitches on this part which is fed the fastest will be spread over more surface in a given time than will the stitches on the portion that traveled slower-thatis, more fabric will pass beneath the needles farthest from the slowest-movin g feedroll, in the in tervals between their stitches, than will pass be neath the other needles, to which the cloth is fed at a reduced speed; so that if a piece of goods of conical shape is to be quilted the larger spreading angles of the stitches may be at the base of the goods and the smaller ones near its top, or a straight piece of goods may be sewed with the angles of the stitches gradually diminishing in size from one side to the other. As the cloth proceeds beneath the needles it is kept in contact against the surface of the feed-rolls L and M by the pressure-rolls l? and Q, which exert a yielding pressure through their coiled springs t.

The adjustment of the levers T is regulated and the levers held in their desired position by the pins 1), which are forced into the recesses r by the operation of the springs to.

The frame A, as it reciprocates from right to left, is guided in its movement by slots 20, formed in its base, and guide-pins y, passing through the same; and as this frame A reciprocates the shaft G is caused to play in and out of the shaft I, by reason of its telescoping in said shaft, withoutintcrfering with the turning of either shaft, by reason of the slot 0 and key d.

Having thus described our invention, what we claim as new, and desire to secure by Letters Patent, is-

1. In a sewing-machine, the combination, with a needle-carryin g frame and means to reciprocate the same, of two feed-rolls arranged on the same side of the cloth, ratchet-wheels N O therefor, levers 1t,pawls s thereon, levers T, to adjust the levers R, and camsHJ,whereby each of the feed-rolls may be actuated independently of the other, substantially as and to vary the speed of the rolls independently of Io for the purpose described. one another, substantially as and for the pur- 2. In a sewing-machine, the combination, pose described.

with a needle-carrying frame and mechanism for reciprocating the same two independentlymovable feed-rolls, L M, ratchet-wheels N O, levers R, and -paw1s s thereon, cams H J, 1evers T, and projections 0 thereon, to operate in connection with the said levers R and pawls 8,

WILLIAM KOCH. WILLIAM WIESE.

Witnesses:

H. L. WATTENBERG, G. W. PLYMP'roN. 

